/*
 * FreeModbus Libary: BARE Port
 * Copyright (C) 2006 Christian Walter <wolti@sil.at>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * File: $Id$
 */

#include "port.h"
#include "stm32f1xx_hal.h"
#include "usart.h"
/* ----------------------- Modbus includes ----------------------------------*/
#include "mb.h"
#include "mbport.h"

/* ----------------------- static functions ---------------------------------*/
//static void prvvUARTTxReadyISR( void );
//static void prvvUARTRxISR( void );
/* ----------------------- Start implementation -----------------------------*/
void vMBPortSerialEnable(BOOL xRxEnable, BOOL xTxEnable) {
	/* If xRXEnable enable serial receive interrupts. If xTxENable enable
	 * transmitter empty interrupts.
	 */
	if (xRxEnable)							//将串口收发中断和modbus联系起来，下面的串口改为自己使能的串口
	{
		__HAL_UART_ENABLE_IT(&huart2, UART_IT_RXNE);	//我用的是串口2，故为&huart2
	} else {
		__HAL_UART_DISABLE_IT(&huart2, UART_IT_RXNE);
	}
	if (xTxEnable) {
		__HAL_UART_ENABLE_IT(&huart2, UART_IT_TXE);
	} else {
		__HAL_UART_DISABLE_IT(&huart2, UART_IT_TXE);
	}
}

BOOL xMBPortSerialInit(UCHAR ucPORT, ULONG ulBaudRate, UCHAR ucDataBits,
		eMBParity eParity) {
	return TRUE;				//改为TURE，串口初始化在usart.c定义，mian函数已完成
}

BOOL xMBPortSerialPutByte(CHAR ucByte) {
	/* Put a byte in the UARTs transmit buffer. This function is called
	 * by the protocol stack if pxMBFrameCBTransmitterEmpty( ) has been
	 * called. */
	if (HAL_UART_Transmit(&huart2, (uint8_t*) &ucByte, 1, 0x01) != HAL_OK)//添加发送一位代码
		return FALSE;
	else
		return TRUE;
}

BOOL xMBPortSerialGetByte(CHAR *pucByte) {
	/* Return the byte in the UARTs receive buffer. This function is called
	 * by the protocol stack after pxMBFrameCBByteReceived( ) has been called.
	 */
	if (HAL_UART_Receive(&huart2, (uint8_t*) pucByte, 1, 0x01) != HAL_OK)//添加接收一位代码
		return FALSE;
	else
		return TRUE;
}

/* Create an interrupt handler for the transmit buffer empty interrupt
 * (or an equivalent) for your target processor. This function should then
 * call pxMBFrameCBTransmitterEmpty( ) which tells the protocol stack that
 * a new character can be sent. The protocol stack will then call
 * xMBPortSerialPutByte( ) to send the character.
 */
//static
void prvvUARTTxReadyISR(void)		//删去前面的static，方便在串口中断使用
{
	pxMBFrameCBTransmitterEmpty();
}

/* Create an interrupt handler for the receive interrupt for your target
 * processor. This function should then call pxMBFrameCBByteReceived( ). The
 * protocol stack will then call xMBPortSerialGetByte( ) to retrieve the
 * character.
 */
//static
void prvvUARTRxISR(void)				//删去前面的static，方便在串口中断使用
{
	pxMBFrameCBByteReceived();
}
